具活血祛瘀，润肠通便功效的药为
A．桃仁B．乳香C．三棱D．鸡血藤E．土鳖虫
参考答案：A
简述创伤治疗的主要原则和注意事项。
Read the following English passage and then write a Chinese summary of approximately 300 words that expresses its main ideas and basic information.
